In December 2017, fighting between rival armed groups intensified in northern Central African Republic (C.A.R). Prevailing violence forced thousands of people to flee their homes with many of them crossing the border into Chad in the search of asylum. This population faces important challenges to meet its basic needs in most sectors (food, nutrition, health, water, hygiene, shelter…). Though it is critical for newly arrived refugees to immediately cover their food and nutritional needs for survival, host communities are also struggling due to limited resources that they must share now. Reacting to reports on the scarce availability and quick depletion of food at households level, a number of partners, under the leadership of the Food Security Cluster, carried out an Emergency Food Security Assessment (EFSA) to better understand the situation. Data collection took place between 26 February and 3 March 2018 at three levels (household, community and market levels) in the three cantons hosting refugees.